30nm Carboxyl (carboxyl-PEG3000-SH) Gold Nanoparticles, 1ml
30nm Carboxyl (carboxyl-PEG3000-SH) Gold Nanoparticles, 1ml
30nm Carboxyl (carboxyl-PEG3000-SH) Gold Nanoparticles, 1ml
30nm Carboxyl (carboxyl-PEG3000-SH) Gold Nanoparticles, 1ml
30nm Carboxyl (carboxyl-PEG3000-SH) Gold Nanoparticles, 1ml
30nm Carboxyl (carboxyl-PEG3000-SH) Gold Nanoparticles, 1ml
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SKU: CGC3K-30-50
50 OD (526nm abs max), supplied in USP grade purified water
Price: $395.00
Product Details
Composition: Carboxyl gold nanoparticles
Core Size: 30nm
Adsorption max: 526nm
OD per ml: 50 (50x more concentrated than our non-functionalized gold nanoparticles)
Particles per ml: 8.96E+12
Volume: 1ml
Nr of Carboxyl Groups on Surface: ~1/nm2
Formulation: Supplied in USP grade purified water 


Cytodiagnostics PEGylated Gold Nanoparticles with carboxyl functional groups are made using a unique proprietary protocol resulting in particles with superior size distribution and shape compared to the leading competitor (Tech Note #104) and are ideal for development of covalent gold nanoparticle conjugates. 

The carboxyl functionalized gold surface allows for covalent conjugation of antibodies, proteins and other ligands using standard EDC/NHS coupling chemistry.   

These gold nanoparticles have a narrow size distribution (CV of less than 15%) and more than 95% spherical particles.

Low batch to batch variability (+/- 2nm) assures you as a customer always end up with a product within the specified size range ordered.

All of our batches go through stringent quality control prior to shipment to our customers using dynamic light scattering to guarantee size and monodispersity and lot specifications are supplied with each product.


Store product away from direct sunlight at 4°C. Do NOT freeze. When stored as specified the product is stable for at least twelve months.



Peak SPR Wavelength (nm)


Wt. Conc (mg/ml)*

Molar Ext (M-1cm-1)

Size Dispersity (+/-nm)

Particle Volume (nm3)

Surface Area (nm2)

Surface/ Volume Ratio

Particle Mass (g)

Molar Mass (g/mol)

Molar Concentration*













*All concentrations as indicated at an optical density of 50 (OD=50)

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